Selection Of Greening Plants And Landscape Evaluation On Soil Slope Of South China Expressway

With China’s economic development extending from coastal areas to inland areas,in order to meet the needs of economic development,the speedy development of highway construction,highway network gradually improved.Most of the new highway design lines are laid in low hilly areas,and slope comprehensive protection has become an important part of highway construction.Slope comprehensive protection is a combination of ecological restoration,landscape design and basic protection of soil and water conservation,in order to form the main idea of comprehensive protection of soil slope of expressway.This work should be applied in the actual process of highway design,construction and maintenance,taking into account the grade of highway,topography and landform of construction area,rainfall intensity,soil quality,surface water,groundwater and material sources,so as to adapt to local conditions,select economic and aesthetic,and arrange practical and reasonable comprehensive slope protection engineering measures.The importance of this work lies in ensuring the structural stability of the expressway,the safety of passing vehicles at high speed,the property safety of the expressway and meeting the requirements and important indicators of coordination with the surrounding environment,so as to achieve the effect of maintaining a relatively balanced original ecological environment,reducing disturbances,beautifying the overall environment of the expressway,and integrating the landscape of the Expressway into the ecological environment.The climate and environment in South China are characterized by rainy weather and typhoon,and the geological conditions are mainly soil.Plant measures have become one of the important contents of comprehensive protection measures for Expressway slope.Therefore,the selection of greening plants on the soil slope of Expressway in South China is particularly important.On the basis of perfect Expressway construction,we should deeply understand and discuss the actual situation of the failure form and mechanism of the soil excavation slope of expressway,and further discuss the practical application of the safety and stability of the slope of expressway,soil and water conservation and the allocation of greening landscape.This paper will introduce the failure form and mechanism analysis of soil excavation slope of expressway.Through experiments,comprehensive analysis will be carried out from two angles of soil and water conservation and plant allocation of greening landscape.The effect of plant soil and water conservation protection,vegetation allocation and landscape evaluation will be studied according to the climate and geological conditions in South China.Taking Expressway in Guangdong as an example,this thesis studies the plant protection measures of soil excavation slope in order to determine the soil loss of different vegetation types under the same conditions of soil,slope angle and vegetation coverage,and to evaluate the effect of plant allocation and landscape on slope under the premise of relatively stable vegetation protection measures.It provides a theoretical basis for scientific selection of landscape vegetation types and optimization of greening allocation of soil slope of expressway.